iDeal

My XFX 4870 1gb landed to today so I've mounted it (inc Crossfire strip) and now after booting up, the monitor is displaying no signal? I don't even get a BIOS screen so I assume it's not the drivers (none installed for the 4870 as yet).

**EDIT** Tried all DVI ports, everything is running but just no signal.

I've looked through the forums but I can't find any info. Any help appreciated, + rep.

Cheers guys.

gamervivek

is the computer booting up at all?tried the different DVI ports on both the cards?

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there are only 10 kind of people in this world, those who understand ternary, those who don't, and then those who don't give a damn.

I see in Fight Club the strongest and smartest men who've ever lived. I see all this potential, and I see squandering...

So bye-bye, miss american pie,gamervivek has left the building.

Ati Tray Tools vs CCC

iDeal

Yeah it's booting just nothing on display and I've tried all DVI ports, only when in the correct (Top left) slot do I even get the no signal message; which I find odd.

rico2001

Plug monitor into other card. The initial boot up signal could be going into the other card. How is your power? Al power cables plugged in. Did you uninstall the drivers first? Try the new card alone just to make sure it is ok.

__________________
My reviews:
4870, 4870 Tri-fire, 4850 X2 Quad-fire, 4850 X2 vs. 4870 X2,
4850 X2 + 4870 Tri-fire, 4850 X2 + 4870 X2 Quad-fire, 4850 + 4870 Crossfire,
(NEW) 4890 vs. 4850 X2

Steam nick: rico2001

"The ability to learn faster than your competitors may be only sustainable competitive advantage." ~Arie de Geus

iDeal

Tried all 4 bud. At a loss as to what the problem could be. Surely if there was a problem with the new card, it would still POST but with my primary 4870x2? Power should be fine, there is plenty of headroom.

rico2001

try new card alone in both pci-e slots and work your way out from there. And I wasn't concerned if you had enough power, just that you had it plugged in. I once forgot to plug one of my cards up, it happens. Just checking all basis.

__________________
My reviews:
4870, 4870 Tri-fire, 4850 X2 Quad-fire, 4850 X2 vs. 4870 X2,
4850 X2 + 4870 Tri-fire, 4850 X2 + 4870 X2 Quad-fire, 4850 + 4870 Crossfire,
(NEW) 4890 vs. 4850 X2

Steam nick: rico2001

"The ability to learn faster than your competitors may be only sustainable competitive advantage." ~Arie de Geus

iDeal

Yeah, I've tried both PCI slots, both work with the 4870x2. Also, I've reseated both cards and power cables. Cheers for the thoughts though.

gamervivek

try VGA if your monitor has it

__________________
there are only 10 kind of people in this world, those who understand ternary, those who don't, and then those who don't give a damn.

I see in Fight Club the strongest and smartest men who've ever lived. I see all this potential, and I see squandering...

So bye-bye, miss american pie,gamervivek has left the building.

Ati Tray Tools vs CCC

HondaGuy

CMOS,, clear your bios
Dont you need a bigger PSU for Crossfire those 4870???

Your PSU: To add a bit of insult to injury, there are only two PCI-E 6-pin connectors and not a single 8-pin PCI-E connector in sight. This is an 800W power supply and in this day and age people use these high wattage power supplies to power dual 8800GTX cards or something very close to that. Without using the Molex to 6-pin connectors included with the cards, there is no way to power dual 8800GTX or HD2900XT cards with the BFG 800W power supply.

Source: http://www.hardwarecanucks.com/forum...-review-2.html

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PHENOM II X2 550BE OC CLUB

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Phenom II 550 X2 @ 4.1(MA790X-UD4P) http://valid.canardpc.com/show_oc.php?id=638438
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encore018

Maybe the motherboard??